Elon Musk ended Tesla's earnings call with an urgent plea

Elon Musk at the World Economic Forum in Davos, Switzerland, in 2026.

Harun Ozalp/Anadolu via Getty Images

• Elon Musk took the final moments of Tesla's earnings call to warn American companies about global battery supply risks.
• Tesla has built its own lithium refinery and battery facility to avoid disruptions: "We wish others would build this," Musk said.
• Recent studies show renewed interest in building the facilities — but construction has slowed.

"Can other people...